Furnace-door-operating means



Jan, 23, 1923.; 1,443,144.

4 c. J. PILLlOD.

FURNACE DOOR OPERATING MEANS. FILED FEB. IR], 1921.

li atented Jan, 234,

CHARLES I. rrrmronor TOLED0,0J?EEIO, assieriois 'ro DANIEL snanrns, rnus'rnn, or

i 'ronnno, orrro.

runnncn-nooa-ornnn rme MEANS.

Application filed February 10,1921. Serial No. 443,744.

To a whom it may concern lie itknown that I, CHARLES a citizen of the United States, and a resident of Toledo, in the county of Lucas and State of Ohio,- have invented certain new and useful Fur-nace-Door-Operating Means; and I do hereby declare the following to be a full, clear, and exact description of the in-, vention, such aswill enable others skilled, in the art to which it appertains to make,

and use the same, reference being had to the accompanying drawings and to the characters of reference marked thereon, which form a partof this specification.

This invention relates to mechanisms for mooningand closing the fire doors of furnaces, and more particularly to those adapted for use in connectiohwith fire doors of l oeomotives.

The object of my inventionds the provision in combination with doors of the swinging type, of a simple, elticient and improved mechanism for ])611111Q and closing the same and adapted to lock the doors in open position.

A; further object of the invention is to provide a simple, link operatlng means for the doors which has an action similar to the gear segment operating means commonly,

employed in doors of this type; I

The lIlVel'ltlOIl is fully (lGSCIll'JOtl in the following specification, and while, in its broader aspect, it is capable of en'ibodiment in numerous forms, a )referred einbodin'lent thereof is illustrated in"the accompanying drawings, in which- Figure 1 is a front elevation of a furnace door mechanism embodying the invention with the connected doors in closed position. is a vertical section thereof on the Fig.1. line 2-2 in. l 1. with parts in full, and. lligr is a fi .ientary front elevation. wi h the doors in full open position and loch in such position. i

Referring to the drawings 1 designates a furnace door frame having a lire-door o iiening 2 thereimwhich closed. by a pair of swinging doors 3. These doors are piv- ()tktlly suspended from respective pivot studs 4: and 41-. for opposed opening and closing swinging movements, the studs projecting forward from the frame 1 above the opening 2 therein and in transverse horizontally spaced relation to each other. For this purpose each (1001' 3 has an arm 5 extending J. PILLIOD,

as shown in ig'. 1.

upward therefrom with one mounted on a pivot stud d and the other on a pivot stud 41". Each arm 5 is of angled form with the pivot stud bearing in its elbow portion, and one has its forearm 6 projecting inwardly therefrom toward the pivot stud of the othermvhile the other arm Shes its forearm 7 projectii'iginwardly and upwardly therefrom over the adjacent inner end portion of the arm (3 in lapping relation thereto, 7 The forearm 6 carries a pivot pin 8 at its free end, and the forearm 7 carries a pivot pin 9 at its free end, and these pins are connected by one or more links .10 whereby the doors are tied together and caused to have opposed movements in unison whenever one is moved.

A. fluidoperating means for the doors may be employed and in the embodimentthereof illustrated inthe drawings, 1.1 designates a cylinder having a piston therein with its piston-rod l2 mmueeted to a pivot pin 13 on the arm 5 of one of the doors, the cylinand operated from a foot pedal 15 through any suitable intermediate connection, as well understood in the art. y

In order that the doors may be manually operated when desired, a control lever '16 is provided for such purpose and is fulcruined on a stud 1.7 projecting: from the frame '1' above the forearm (i. The short arm 18 of this lever extends from the lever fulcrum over the hub portion 19 at the lower end of one of the links 10 in position to bear downward on such hub portion and impart an opening nioveniei'it to the doors when the lever lllllUWll down from. the l. to t shown in V 3, When the doi are in full open posi JlUll the levererm 18 in end abutment with the link hub 19 to lock the doors against ,vity closing movements, as shown in Fig,

One of the primary objects of the present invention is to provide a simple link connoctin r means for furnace doors of the class struction and eliminating the liability of breakage which is present when a gear toothed structure is employed. With the arrangement shown the pivots 4t, 8 and. 45" are in horizontal alignment when the doors are in'closed position, as shown in Fig. l, and

.the pivots, 4, 9 and 4; are in horizontalalignment when the doors are in full open position. It will also be noted particularly by reference to Fig. 3 that a straight line will pass through three points determined by the centers of the pivots 8 and 9 when in closed position and by the center point of the pivot 8 when. at the limit of its lower throw, thereby causing the action of the forearm and link connection between the arms 5, 5 of the doors to be the same as the action of connected gear segments between said arms.

I wish it understood that my invention is not limited to any specific construction, arrangement, or form of the parts, as it is capable of numerous modifications and changes without departing from the spirit of the claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is,-

1. In combination, a furnace door frame having an opening therein, a pair of doors pivotally suspended from the frame for opposed opening and closing movements, the door pivots being transversely separated in a common horizontal plane, one door having an arm projecting from its inner end toward the pivot of the other door when the doors are in closed position, and the other door having an arm projecting inward there from over the first arm, a link connecting said arms with the pivots thereof when in closed position disposed substantially in a straight line with the positions which the pivots assume when in open position, and means for imparting opening movements to the doors.

2. In combination, a furnace door frame having an opening therein, a pair of transversely spaced pivot studs projecting in a common horizontal plane from the frame over its opening, a door swingingly suspended from each pivot, said doors having arms extending inward in lapping relation one over the other, a single link connecting said arms to cause the doors to have op )osed opening and closing movements in uilison, and an operating lever fulcrumed to the frame above the doors and operable to exert a downward thrust on one arm and movable to impart opening movements to the doors, the lever adapted to have end thrust engagement with the engaged part when the arms are in open position to lock them in such position.

3. In combination, a furnace door frame having an opening therein, a pair of transversely spaced pivot studs projecting in a common horizontal plane from the frame over its opening, a door swingingly suspended from each stud for op )osed swinging movements transverse to the frame, each door having an angled arm projecting upward from its upper end and pivotally carried at its elbow portion by a respective stud and having its forearm portion projecting inward from the stud with the forearm portion of one arm lapping that of the other arm, a short link pivotally connecting the free ends of the elbow portions of the arms and having a pivot receiving boss projecting laterally from its lower end, the link pivots being disposed in vertically spaced relation with one ofi'set horizontally only a short distance from the vertical plane of the other, and a lever pivoted for vertical rocking movements to the door frame above the horizontal plane of the pivot studs and having apart for hearing against the boss of the link to impart an opening movement to the doors when the lever is moved in one direction.

In testimony whereof, I have hereunto signed my name to this specification.

CHARLES J. PILLIOD. 

